Motor direct drive transmission structure for washing machine and washing machine

Abstract

The utility model relates to the technical field of washing machines, and provides a motor direct-drive transmission structure for a washing machine and the washing machine, the motor direct-drive transmission structure for the washing machine comprises a mounting plate, a dewatering shaft sleeve, an impeller shaft, a positioning sleeve, a motor body and a coupling sleeve, a spline structure is arranged in the center of the coupling band waterproof plate or close to the center of the coupling band waterproof plate and used for being in transmission connection with splines of the impeller shaft and the motor rotor output shaft. According to the motor direct-drive transmission structure for the washing machine, through ingenious design, the efficient, compact, sealed and stable transmission effect is achieved, and the overall performance of the washing machine and the comfort of user experience are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of washing machines, in particular to a motor direct-drive transmission structure for a washing machine and a washing machine. Background Art

[0002] In the field of washing machines, traditional pulsator washing machines mostly use a belt drive structure, which uses a carbon brush motor to drive the belt and a reduction clutch to achieve power transmission. This structure is not only complex, but also easily causes the washing machine to generate large noise and vibration during the washing process, affecting the user experience. In addition, the use of belts and reduction clutches also increases maintenance costs and energy consumption.

[0003] With the advancement of technology and the increase in consumer demand, direct-drive motor technology has emerged and has gradually been applied to the field of washing machines. Direct-drive motors eliminate intermediate transmission components such as belts and reduction wheels, and directly transmit the motor torque to the inner drum or impeller of the washing machine, effectively improving transmission efficiency and stability while reducing noise and energy consumption. However, the existing direct-drive transmission structure still has some design deficiencies, such as complex installation, high cost, and insulation performance that needs to be improved. How to further reduce vibration, improve washing effects, and maintain the compactness of the structure is still a technical challenge facing the industry. Utility Model Content

[0004] In view of this, the utility model aims to propose a motor direct-drive transmission structure for a washing machine and a washing machine, so as to solve at least one of the technical problems of traditional washing machines, such as complex transmission structure, low transmission efficiency, large energy loss, insufficient sealing performance, large occupied space, and possible electrical safety hazards.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A motor direct drive transmission structure for a washing machine, comprising:

[0007] A mounting plate, used to fix the power transmission structure, with a mounting hole arranged near the middle thereof;

[0008] A dehydration sleeve is installed in the installation hole through a large water seal and a ball bearing;

[0009] The impeller shaft is installed in the dehydration sleeve through a small water seal and an oil-containing bearing;

[0010] A positioning sleeve, arranged at the lower end of the small water seal, for limiting the axial movement of the impeller shaft;

[0011] A motor body, fixed to one side of the mounting plate, comprising a motor rotor output shaft;

[0012] The coupling sleeve comprises a coupling sleeve waterproof plate, and a spline structure is arranged at the center position or near the center position of the coupling sleeve waterproof plate for spline transmission connection with the impeller shaft and the motor rotor output shaft.

[0013] Furthermore, the coupling sleeve waterproof plate is arranged in a disc shape, and a coupling sleeve fan blade is arranged on a side of the coupling sleeve waterproof plate close to the motor body.

[0014] Furthermore, the spline structure in the middle of the coupling sleeve is separated into a lower spline groove of the coupling sleeve and an upper spline groove of the coupling sleeve by an insulating partition of the coupling sleeve, and is respectively connected to the motor rotor output shaft and the impeller shaft.

[0015] Furthermore, the diameter of the outer circumferential surface of the upper end portion of the coupling sleeve is the same as the diameter of the outer circumferential surface of the lower end portion of the dehydration sleeve.

[0016] Furthermore, the motor body is coaxially mounted on the outer side of the mounting plate through an insulating pad.

[0017] Furthermore, a ratchet lever is provided on the mounting plate, and a square wire torsion spring and a matching ratchet are sleeved on the outer circumferential surface of the upper end portion of the coupling sleeve. The ratchet lever can rotate to move the ratchet or disengage from the ratchet to perform clutch switching between the dehydration sleeve and the coupling sleeve.

[0018] Furthermore, the ratchet lever is mounted on the mounting plate via a lever pin and a return spring.

[0019] Furthermore, the impeller shaft and the dehydration sleeve are integrated into a composite shaft.

[0020] Furthermore, the lower end of the composite shaft is connected to the motor rotor output shaft via a coupling sleeve, or the composite shaft is rotatably mounted on a mounting plate via a water seal and a bearing.

[0021] Compared with the prior art, the motor direct drive transmission structure for washing machines described in the utility model has the following advantages:

[0022] (1) The motor direct-drive transmission structure for the washing machine described in the utility model has a compact overall structural design, which reduces the space occupied inside the washing machine, is conducive to the miniaturization and lightweight design of the washing machine, has good sealing performance, effectively prevents the penetration of moisture and detergent, protects the motor and transmission components, extends the service life, ensures the stability of the dehydration sleeve and the impeller shaft during rotation, and reduces vibration and noise.

[0023] (2) The motor direct drive transmission structure for the washing machine described in the utility model achieves efficient, compact, sealed and smooth transmission effects through ingenious design, further improving the performance of the washing machine and the comfort of user experience.

[0024] Another object of the present invention is to provide a washing machine, on which the motor direct drive transmission structure for the washing machine as described above is provided.

[0025] The advantages of the washing machine described above and the motor direct drive transmission structure for the washing machine described above over the prior art are the same and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0027] Figure 1 It is a front view structural schematic diagram of the motor direct drive transmission structure for a washing machine according to an embodiment of the utility model;

[0028] Figure 2 It is a top view of the structure of the motor direct drive transmission structure for a washing machine according to an embodiment of the utility model;

[0029] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0030] Figure 4 It is a side view structural schematic diagram of the motor direct drive transmission structure for a washing machine according to an embodiment of the utility model;

[0031] Figure 5 It is a side view structural schematic diagram of the coupling sleeve described in the embodiment of the utility model;

[0032] Figure 6 This is a schematic cross-sectional view of the coupling sleeve according to an embodiment of the utility model;

[0033] Figure 7 This is a front view structural diagram of a motor direct drive transmission structure for a washing machine according to a second embodiment of the utility model;

[0034] Figure 8 for Figure 7 A schematic top view of the direct drive transmission structure of a motor for a washing machine shown in FIG.

[0035] Fig. 9 for Figure 8 Schematic diagram of the cross-sectional structure of the middle BB;

[0036] Description of reference numerals:

[0037] 1. Impeller shaft; 2. Dehydration sleeve; 3. Small water seal; 4. Positioning sleeve; 5. Oil-containing bearing; 6. Large water seal; 7. Ball bearing; 8. Mounting plate; 9. Lever pin; 10. Reset spring; 11. Ratchet lever; 12. Square wire torsion spring; 13. Ratchet; 14. Coupling sleeve; 15. Insulating pad; 16. Motor rotor output shaft; 17. Motor body; 18. Composite shaft; 19. Mounting hole; 1401. Coupling sleeve waterproof plate; 1402. Coupling sleeve fan blade; 1403. Coupling sleeve lower spline groove; 1404. Coupling sleeve insulating partition; 1405. Coupling sleeve upper spline groove. DETAILED DESCRIPTION

[0038] In order to make the technical means, objectives and effects of the present invention easy to understand, the embodiments of the present invention are described in detail below with reference to specific drawings.

[0039] It should be noted that all terms used in the present invention for directional and positional indications, such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "lower", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection conditions between the components in a certain state (as shown in the accompanying drawings), and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] Example 1

[0043] like Figures 1 to 6 As shown, the utility model discloses a motor direct drive transmission structure for a washing machine, comprising:

[0044] The mounting plate 8 is used to fix the power transmission structure, and a mounting hole 19 is provided near the middle thereof;

[0045] The dehydration sleeve 2 is installed in the mounting hole 19 through the large water seal 6 and the ball bearing 7, and can rotate relative to the mounting plate 8;

[0046] The impeller shaft 1 is installed in the dehydration sleeve 2 through a small water seal 3 and an oil-containing bearing 5, and can rotate relative to the mounting plate 8;

[0047] A positioning sleeve 4 is arranged at the lower end of the small water seal 3 to limit the axial movement of the impeller shaft 1;

[0048] The motor body 17 is fixed to one side of the mounting plate 8 and includes a motor rotor output shaft 16;

[0049] The coupling sleeve 14 includes a coupling sleeve waterproof plate 1401, and a spline structure is arranged at the center position or near the center position of the coupling sleeve waterproof plate 1401 for spline transmission connection with the impeller shaft 1 and the motor rotor output shaft 16.

[0050] The motor direct drive transmission structure for the washing machine described in the present application uses the mounting plate 8 as the support of the overall structure to fix the power transmission structure, and opens a mounting hole 19 in the middle of the mounting plate 8 for mounting the dehydration shaft sleeve 2. The dehydration shaft sleeve 2 is mounted in the mounting hole 19 through a large water seal 6 and a ball bearing 7 to ensure that the dehydration shaft sleeve 2 can rotate freely and has good sealing performance. The impeller shaft 1 is mounted in the dehydration shaft sleeve 2 through a small water seal 3 and an oil-containing bearing 5 and can also rotate freely. At the same time, the small water seal 3 provides additional sealing protection. The positioning sleeve 4 is arranged at the lower end of the small water seal 3 to limit the axial movement of the impeller shaft 1. To ensure the stability of the impeller shaft 1 during rotation, the motor body 17 is fixed on the outside of the mounting plate 8, and its motor rotor output shaft 16 is used to output power. The coupling sleeve 14 is a key component of the motor body 17 and the impeller shaft 1. Its coupling sleeve waterproof plate 1401 prevents water leakage onto the motor body 17. Spline structures are respectively arranged on the center or on the opposite sides of the coupling sleeve waterproof plate 1401 near the center, one end of which is connected to the spline of the motor rotor output shaft 16 to realize power transmission from the motor to the coupling sleeve, and the other end is connected to the spline of the impeller shaft 1 to transmit power from the coupling sleeve to the impeller shaft, thereby driving the impeller to rotate.

[0051] The motor direct drive transmission structure for washing machines described in the present application has a compact overall structural design, reduces the space occupied inside the washing machine, is conducive to the miniaturization and lightweight design of the washing machine, has good sealing performance, effectively prevents the infiltration of moisture and detergent, protects the motor and transmission components, prolongs the service life, ensures the stability of the dehydration sleeve 2 and the impeller shaft 1 during rotation, and reduces vibration and noise. The motor direct drive transmission structure for washing machines described in the present application, through ingenious design, achieves an efficient, compact, sealed, and stable transmission effect, further improving the performance of the washing machine and the comfort of user experience.

[0052] As a preferred example of the present application, the coupling sleeve waterproof plate 1401 is provided in a disc shape, and a coupling sleeve fan blade 1402 is provided on one side of the coupling sleeve waterproof plate 1401 close to the motor body 17. In the example of the present application, the coupling sleeve fan blade 1402 on the coupling sleeve waterproof plate 1401 will generate wind force as the motor rotates when the washing machine is working, which helps to dissipate heat from the motor body, reduce the working temperature of the motor, and thus extend the service life of the motor. At the same time, the coupling sleeve fan blade 1402 is directly provided on the coupling sleeve waterproof plate 1401, which makes full use of the space, makes the overall structure more compact, contributes to the miniaturization and lightweight design of the washing machine, facilitates installation and disassembly, and further improves the overall performance of the washing machine.

[0053] As a preferred example of the present application, the spline structure in the middle of the coupling sleeve 14 is separated into a coupling sleeve lower spline groove 1403 and a coupling sleeve upper spline groove 1405 by a coupling sleeve insulating partition 1404, which are respectively connected to the motor rotor output shaft 16 and the impeller shaft 1. In the example of the present application, the coupling sleeve 14 is designed as a composite structure, including a disc-shaped coupling sleeve waterproof plate 1401 to prevent water leakage to the motor body 17, and a coupling sleeve fan blade 1402 is arranged on one side of the disc structure to dissipate heat for the motor body 17. The spline structure in the middle of the coupling sleeve 14 is separated on opposite sides by a coupling sleeve insulating partition 1404 to form a coupling sleeve lower spline groove 1403 and a coupling sleeve upper spline groove 1405. The coupling sleeve lower spline groove 1403 is spline-connected to the motor rotor output shaft 16, and the coupling sleeve upper spline groove 1405 is spline-connected to the impeller shaft 1. When the motor body 17 works to drive the motor rotor output shaft 16 to rotate, the impeller shaft 1 is driven to rotate through the coupling sleeve 14. The coupling sleeve 14 is made of plastic material and is an insulator to ensure that the motor body 17 is insulated and separated from the impeller shaft 1.

[0054] The above arrangement discloses a specific structural design of the coupling sleeve 14, which not only realizes insulation isolation and waterproof protection between the motor and the impeller shaft 1, but also enhances the heat dissipation capacity and transmission efficiency of the motor, thereby improving the safety and reliability of the entire system.

[0055] As a preferred example of the present application, the diameter of the outer circumferential surface of the upper end portion of the coupling sleeve 14 is the same as the diameter of the outer circumferential surface of the lower end portion of the dehydration sleeve 2 .

[0056] This arrangement makes the coupling sleeve 14 and the dehydration sleeve 2 more coordinated in appearance and size, reduces unnecessary space occupation, is conducive to the compact layout of the internal structure of the washing machine, and thus helps to achieve the miniaturization and lightweight of the washing machine. At the same time, it facilitates alignment and fixation during installation, reduces installation difficulty and time, improves production efficiency, and reduces production costs.

[0057] As a preferred example of the present application, the motor body 17 is coaxially mounted on the outside of the mounting plate 8 through an insulating pad 15, a spline structure is provided at the lower end of the impeller shaft 1, and a spline structure is also provided at the end of the motor rotor output shaft 16.

[0058] As a preferred example of the present application, a ratchet lever 11 is provided on the mounting plate 8, and a square wire torsion spring 12 and a matching ratchet 13 are sleeved on the outer circumferential surface of the upper end of the coupling sleeve 14. The ratchet lever 11 can rotate and move the ratchet 13 or disengage from the ratchet 13 to switch the dehydration sleeve 2 and the coupling sleeve 14. As a preferred example of the present application, the ratchet lever 11 is installed on the mounting plate 8 through the lever pin 9 and the reset spring 10, and the ratchet 13 is moved by the rotation of the ratchet lever 11 or disengaged from the ratchet 13 by the action of the reset spring 10. This realizes the separation or combination of the dehydration sleeve 2 and the coupling sleeve 14, and realizes the process control of the clutch state.

[0059] This setting discloses a specific method of clutch switching between the dehydration sleeve 2 and the coupling sleeve 14. Through the composite design of the coupling sleeve combined with the clutch control of the pawl lever and the ratchet, efficient, insulated and waterproof transmission of the motor and the impeller shaft is achieved, while ensuring the flexibility and stability of the clutch switching, thereby improving the operating efficiency and safety of the washing machine, simplifying maintenance work, and enhancing the compactness and durability of the structure.

[0060] Example 2

[0061] like Figures 6 to 9 As shown, the utility model discloses a second motor direct drive transmission structure for washing machines, wherein the impeller shaft 1 and the dehydration sleeve 2 are integrated into a composite shaft 18, and the lower end of the composite shaft 18 is connected to the motor rotor output shaft 16 through a coupling sleeve 14. Other structures are the same as those of the first embodiment.

[0062] This embodiment discloses a second scheme of a motor direct drive transmission structure for a washing machine, in which the impeller shaft 1 and the dehydration sleeve 2 are integrated into a composite shaft 18, which rotates synchronously and drives the impeller and the inner barrel to rotate at the same time. An external spline is provided at the lower end of the composite shaft 18, which is connected to the motor rotor output shaft 16 through a coupling sleeve 14. When the motor rotates, it can drive the impeller and the inner barrel to rotate at the same time. This setting further simplifies the transmission path, improves the transmission efficiency, reduces energy loss, improves the stability and reliability of the system, and reduces the possibility of failure; at the same time, the design of the composite shaft 18 also enhances the compactness and rigidity of the overall structure, which is conducive to improving the overall performance and service life of the washing machine.

[0063] Example 3

[0064] like Figures 1 to 9 As shown, the utility model discloses a third motor direct drive transmission structure for washing machines, wherein the impeller shaft 1 and the dehydration sleeve 2 are integrated into a composite shaft 18, and the composite shaft 18 is rotatably mounted on the mounting plate 8 through a water seal and a bearing, and an inner hole with a spline or a square key is provided at the lower end of the composite shaft 18, and the motor rotor output shaft 16 is provided with an outer spline matching the inner spline of the composite shaft 18. Other structures are the same as those of embodiment 1.

[0065] When the motor body 17 is fixed on the mounting plate 8, the motor rotor output shaft 16 is inserted into the composite shaft 18. When the motor rotor output shaft 16 of the motor body 17 rotates, the washing tub of the pulsator is driven to rotate together. It can be used for small pulsator washing machines with simple structure and low cost, which further improves the overall performance of the washing machine products and the consumer's experience.

[0066] The present application also discloses a washing machine, on which is arranged the motor direct drive transmission structure for the washing machine as described in the above embodiment.

[0067] The motor direct-drive transmission structure for a washing machine described in the present application achieves maximum utilization of the internal space of the washing machine and efficient and stable power transmission through a compact integrated design, an efficient transmission mechanism, and multiple sealing protection measures, thereby ensuring the miniaturization, lightweight, and high-performance operation of the washing machine and significantly improving the user experience; at the same time, the structure incorporates innovative clutch control mechanisms and insulation and waterproof measures into the design, which not only improves the flexibility and reliability of the washing machine under different working conditions, but also enhances the safety of the motor and transmission components, extends the service life of the washing machine, and significantly improves the overall performance of the washing machine.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A motor direct drive transmission structure for a washing machine, characterized in that: include: A mounting plate (8) is used to fix the power transmission structure, and a mounting hole (19) is provided near the middle of the mounting plate; A dehydration sleeve (2) is installed in the installation hole (19) via a large water seal (6) and a ball bearing (7); The impeller shaft (1) is installed in the dehydration shaft sleeve (2) through a small water seal (3) and an oil-containing bearing (5); A positioning sleeve (4) is arranged at the lower end of the small water seal (3) and is used to limit the axial movement of the impeller shaft (1); A motor body (17), fixed on one side of the mounting plate (8), comprising a motor rotor output shaft (16); The coupling sleeve (14) comprises a coupling sleeve waterproof plate (1401), and a spline structure is arranged at the center position or near the center position of the coupling sleeve waterproof plate (1401) for spline transmission connection with the impeller shaft (1) and the motor rotor output shaft (16).

2. The motor direct drive transmission structure for a washing machine according to claim 1, characterized in that: The coupling sleeve waterproof plate (1401) is arranged in a disc shape, and a coupling sleeve fan blade (1402) is arranged on a side of the coupling sleeve waterproof plate (1401) close to the motor body (17).

3. The motor direct drive transmission structure for a washing machine according to claim 2, characterized in that: The spline structure in the middle of the coupling sleeve (14) is separated into a coupling sleeve lower spline groove (1403) and a coupling sleeve upper spline groove (1405) by a coupling sleeve insulating partition (1404), and is respectively connected to the motor rotor output shaft (16) and the impeller shaft (1).

4. The motor direct drive transmission structure for a washing machine according to claim 3, characterized in that: The diameter of the outer circumferential surface of the upper end portion of the coupling sleeve (14) is the same as the diameter of the outer circumferential surface of the lower end portion of the dehydration sleeve (2).

5. The motor direct drive transmission structure for a washing machine according to claim 1, characterized in that: The motor body (17) is coaxially mounted on the outside of the mounting plate (8) via an insulating pad (15).

6. The motor direct drive transmission structure for a washing machine according to claim 1, characterized in that: A ratchet lever (11) is arranged on the mounting plate (8), and a square wire torsion spring (12) and a matching ratchet (13) are sleeved on the outer circumferential surface of the upper end portion of the coupling sleeve (14). The ratchet lever (11) can rotate to move the ratchet (13) or be disengaged from the ratchet (13) to perform clutch switching between the dehydration shaft sleeve (2) and the coupling sleeve (14).

7. The motor direct drive transmission structure for a washing machine according to claim 6, characterized in that: The ratchet lever (11) is mounted on the mounting plate (8) via a lever pin (9) and a return spring (10).

8. The motor direct drive transmission structure for a washing machine according to any one of claims 1 to 7, characterized in that: The impeller shaft (1) and the dehydration shaft sleeve (2) are integrally combined into a composite shaft (18).

9. The motor direct drive transmission structure for a washing machine according to claim 8, characterized in that: The lower end of the composite shaft (18) is connected to the motor rotor output shaft (16) via a coupling sleeve (14), or the composite shaft (18) is rotatably mounted on the mounting plate (8) via a water seal and a bearing.

10. A washing machine, characterized in that: The washing machine is provided with a motor direct drive transmission structure for a washing machine as claimed in any one of claims 1 to 9.

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